Finding the Fourth Proportional to 11,877.43, 17,817.16 and 3,112.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,877.43 : 17,817.16 = 3,112.34 : x
2. Step 2: Convert to fraction form
   11,877.43/17,817.16 = 3,112.34/x
3. Step 3: Cross multiply
   11,877.43x = 17,817.16 × 3,112.34
4. Step 4: Simplify right side
   11,877.43x = 55,453,059.75
5. Step 5: Solve for x
   x = 55,453,059.75/11,877.43
6. Step 6: Final answer
   x = 4,668.78